Selvage motion



y 1952 P. w. MORRISON SELVAGE MOTION 3 Sheets-Sheet 2 Filed Oct. 26,1949 P/r/ci- W MORE/SON, INVENTOR ATTORNEY July 8, 1952 P. w. MORRISONSELVAGE MOTION 3 Sheets-Sheet 3 Filed Oct. 26, 1949 I RICE "(Mow/s0,INVENTQR ATTORNEY Patented July 8, 1952 UNITED STATES PATENT OFFICE I2,602,471 r 5 r w SELVAGE Mo'rIoN n 7 Price WlMorriscn; ch ater, sjo.

' 3 a 5 A Application October 26, 1949, Serial No. 123,740

Thisinvention relates to an improvement in aselvage motion for looms andthe primary object of this invention is to reduce the number of partsnormally employed in selvage motions which have heretofore been in useso as to considerably reduce the cost of manufacture and, in view of thelesser number of parts employed in the present'invention, the improvedselvage motion may be more rapidly assembled and adjusted. than hasheretofore been possible thus decreasing the cost of set-up timeconsiderably. 'Heretofore, selvage motions, such as the #10 selvagemotion manufactured by Draper Corporation of Hopedale, Massachusetts,and of the type shown in U. S. Patent No. 913,095 of Febv ruary 23,1909, have had a driving means for the selvage harnesses, which aredisposed adjacent opposed sides of the loom separate from they mainshed-forming means associated with conventional looms, comprising aselvage cam mounted on the conventional cam shaft-of the loom having-aselvage cam follower guide extending downwardly therefrom, the lower endof which has been pivotally connected intermediate the ends of anoscillatable treadle bar, one end of which was oscillatably connected tothe loomand the other end of which had a selvage treadle stud collarthereon to which the lower ends of the selvage harness straps extendingfrom the lower a ends of adjacent selvage harnesses have been connected.

,One of the harness straps extended beneath aniidler pulley disposed ina lower horizontal plane than the selvage treadle stud collar'and thenextended upwardlyand connected to one side of the stud collar while theother of the; harnessjstraps extended downwardlyandwas connected toanother side of the selvage treadle stud collar and, uponoscillationbeing transmitted to the .selvage treadle bar heretoforedescribed, the selvage harnesses were caused. tow move in oppositedirections relative to each other in a shed-forming operation. g

It is seen that many parts were employed heretofore in a selvage motionof the type described and it is therefore another object of this inven-1 Claim. (01; 139-55 tion to provide an improved driving means for theselvage motion of a, loom comprising a bracket adapted to be secured tothe adjacent conventional intermediate forwardly and rearwardlyextending girt of the loom and having an idlerpulleyrmounted thereonbeneath which sin-intermediate portion of the lower harness strappasses; --The; opposed ends: of thefzlower harness?strapextendupwardlyand "each of these' also taken substantially along responding harnessesand the last-named strap extends upwardly and passes over a similaridler pulley connected to the arch of the loom. An arm is oscillatablymounted at the arch of the loom intermediate its ends and has one endthereof connected to one of the reaches of the upper harness strap andits end remote from the end connected to therupper harness strap has aconnecting rod connected thereto which extends downwarly, and the lowerend being connected to the conventional type of selvage cam followerguide which, in this instance, is moved degrees from the position inwhich it is normally disposed on the loom. Upon vertical movement of theconnecting rod the other reach of the upper harness strap is caused tomove in the opposite direction as oscillatory motion is transmitted tothe arm adjacent the arch of the loom to thereby transmit verticalmovement in opposite directions to the selvage harnesses.

Some of the objects of the invention having been stated, other objectswill appear as the description proceeds when taken in connection I viewthrough a loom showing the improved harness'selvage motion appliedthereto and with many of the parts of the loom being shownschematically; T

Figure 2 is an elevation with parts in section 9 looking at the front ofthe salvage motion and the line 2--2 in Figure 1; 1 V j 1 "Figure 3 isan enlarged vertical sectional view taken substantially along the line3-3 in Figure 2 and showing the conventional selvage cam in solid linesand showing the conventional selvage camfollower guide in dot-dashlines;

Figure 4. is an enlarged fragmentary elevation'taken substantially alongthe line 4-4 in Figure 1 and showing the manner in which the idlerpulley, around which the lower harness strap passesis mounted;

Figure 5 is an enlarged isometric view showing the manner in which theupper end of the selvage motion is'mounted but omitting the conventionalarch of the loom for purposes ofclarity;

v FigureG'is an enlarged vertical sectional view taken substantiallyalong the line 6-8 in'Figu're" 5 andshowing the" manner in which theupper endoffthe'connecting rod is connected 'to the 1 operating lever ofthe improved selvage motion.

Referring more specifically to the drawings, the numerals l and IIindicate the ri ht-hand and left-hand side frame members, respectively,of the loom and which are spanned at their lower portions by transversefront and back girts l3 and M, respectively, secured to the loom sideframe members I!) and l l as by bolts l5. Conventional .forwardly andrearwardly extending right-hand and left-hand middle 'girts l6 and 16',respectively, are secured at their front and rear ends, as by bolts [1,to the front and. back girts l3 and M, respectively.

These intermediate girts l and [6 support the lower ends of conventionalvertically dis-- posed intermediate girts 20 and 20', respectively, theupper ends of which are connected in a conventional manner to atransverse upper girt member '22 the ends of which are secured, as byscrews 23, to the proximate surfaces of the vertically disposed'sideframe members It! and H. The side frame members H3 and H areconnected at their upper front ends by a conventional breast beam 28. Aconventional arch 2'5 is supported on and secured to the proximatesurfaces of the loom side frame members and H, as by screws 21, and thisarch may support, in the usual manner, the main harness frames, notshown, but through which warp yarns 30 passas they extend from aconventional whip roll 3| through a conventional reed '32 where they arewoven into cloth 33 which passes over a conventional sand roll 34, afterwhich the cloth is wound up in a conventional manner, not shown. Thewarp yarns 30 extend over the whip roll 3| from a warp beam 35 supportedby the loom side frame members l0 and H.

A conventional reed 32 is mounted in a conventional manner between a lay$6 and a'reed cap '31 which are supported on the upper ends ofconventional swords MLonly one of which is shown. The swords 40 areconnected to the front ends of pitman rods M, the rear ends of which areconnected, in -a conventional manner, to a" conventional crank shaft '42rotatably mounted in bearing blocks 43 supported on the loom side framemembers Hi and H. The lower ends of the swords 40 are fixedly mounted ona conventional oscillatable rocker shaft 44.

Referring to Figure- 2 it will be observed" that the loom side framemembers I U and U have conventional bearing blocks 45 thereon-whichsupport opposed ends of a conventional pick cam shaft 4 5' having theusual pick earns 47 thereon. The cam shaft 46 and the crank shaft 42 aredriven in a manner well known to those familiar withthe art. The 'partsheretofore described are-conventionalparts of the'loom and it iswiththese parts that the present invention is associated.

In Figure 2 there is shown a right-ha'ndsel vage motionbroadlydesignated at 50 and'a lefthand selvage motion broadly designatedat50,' and since both the right-hand and left-hand selvage motions 50and- 50T are identicahexcept being opposite hand, the selvage motion 50will be described and the same reference characters will apply to likeparts associated with both of the selvage motions 50 and 5D" with thereference characters associated with the left-hand selvage motionbearing the prime notation.

Now, referring to'Figures 1,2, 5 and fibthere is showna substantiallygeshaped upper selvage roll bearing bracket v5! which is VeryJSiniiIarLto the. ;conventional..;type-. of "selvage roll: bearing .35

bracket and has a forwardly projecting portion 52 integral therewith onwhich a selvage roll bearing block '53 is adjustably secured as by setscrew 54. This selvage roll bearing block 53 has a stub shaft 55projecting laterally therefrom on which an upper selvage roll 56 isrotatably mounted. An upper selvage harness strap 51 passes over theupper salvage roll 56 and has front and rear reaches 57a and 5113-,respectively, depending therefrom and to which, the upper ends of aconventional type of selvage harnesses 60 and (ii are connected, as byhook members 62, the reaches 510. and 51b of the upper harness strap 51being provided with suitable holes 63 for reception of the hooks 82.

In operation, the shed formed by the outermost few of the warp yarns 30,at the selvage of the cloth to be woven, pass through and are controlledby the selvage harnesses 6B and GI andflfifl' and 6!. The lower ends ofthe selvage harnesses 60 and BI (Figure 1) are connected, as by hookmembers 64, tothe upper ends-of front and rear reaches 65a and 65b of abottom selvage harness strap 65 (Figures 1, 2 and 4).

The bottom selvage harness strap 65 passes beneath a lower selvage roll6'! rotatablymounted on a stub shaft 10 and prevented from havingendwise movement thereon by suitable collars 1 I and 12 adjustablysecured on the stub shaft 10 as by set screws 13. 'I'he'stub shaft 10"is adjustably mounted in a block 15 as by a setscrew.

16. This block 15 maybe an integral part of a lower selvage roll bracket11 which extends downwardly and inwardly, atan angle, and is secured, byany suitable means such as a bolt 89, to the vertical wall of theforwardly and rearwardly extending intermediate girt 16 (Figuresl and2).

It will be observed in Figure .1 that f.the.sub-. stantially C-shapedupper selvage rollbearing: bracket 5| is secured to the arch 26 of the100m. by any suitable means such as a set screw 26m.

Driving means for improved selvage motion The upper selvage roll bearingbracket 5! (Figures 1 and 5)has a downwardly projecting ear integraltherewith on which a forwardlyand rearwardly extending control lev'er9l' is 05- cillatably mounted asat 92. The control lever 9| haslongitudinally-extending adjustment slots- 93 and 94 at opposed endsthereof and a harness actuating stud '96 is adjustably mounted in thefront adjustment slot 93 of the controlllever 9!.

This harness actuating stud 96 extends laterally between the front'andrear reaches 51a and 51b,-

respectively, of the upper harness strap 51 and the frontrach 51a issecured to the harness actuating stud 9B.-- i

ed upperend of a connecting rod 104 adjustably imbedded therein andbeing secured-in position by'a suitable lock nut- I05.

The connecting'rod 14 extends downwardly,

in Figures 1 and .2, from the cuff member "13 and its lower end slidablypenetrates the split upper end of a conventional type of selvage camfollower guidealflB. and in which the lower end of the .connectingvrodlMisclampingly'secured as byset screws I01 (Figures 1, 2Jand-3); Thelowervend ofthe. selvagecam follower guide I06 is forked as at .llOandstraddles thepicktdhf as by-a screw 91- adjusted I shaft 46. Theouter vertical surface of the se vage cam follower guide I06 hasrotatably mounted thereon, as at III, a cam follower H2 which, due toits peculiar shape, is caused to alternately traverse grooves H3 and H4in a selvage face cam H5 (Figure 3). The selvage face cam H5 is fixedlymounted on the cam shaft 46 and is thereby caused to rotate with thesame. In order to hold the selvage cam follower guide I06 in slidingengagement with the inner vertical face of the selvage face cam H5, asuitable split collar I20 is clampingly secured on the shaft 4 5, as byscrews I2I (Figure 2) and also slidably engages the inner surface of theselvage cam follower guide I06.

The purpose of the two grooves H3 and H4 (Figure 3) in the face cam H5is to provide means whereby the selvage harnesses 60 and 6| are causedto reverse their positions for changing the shed of the selvage warpyarns 30, upon alternate revolutions of the pick cam shaft 40, causingtwo picks to pass between the warp yarns 30 at the selvage of the clothupon each change in the shed of the warp yarns caused by the movement ofthe selvage harnesses 60 and 6|. In other words, while the cam followerH2 is traversing the outer cam groove H3, the front harness 60 will belowered and the rear harness GI will be raised by virtue of theconnecting rod I04 at the upper end of the selvage cam follower guideI06 and the oscillatable control lever SI. Now, upon completion of arevolution, the cam follower H2 is then led into the smaller of the camgrooves H4 to thus raise the frontselvage harness 60 while lowering therear selvage harness GI (Figure 1) and in which position the harnesses60 and SI will remain until the completion of another revolution afterwhich the cam follower H2 then leads into cam groove H3 to repeat theoperation as heretofore stated. It is thus seen that the selvageharnesses 60 and 6| will move in opposite directions far enough tochange the shed of the warp yarns 30 carried thereby only upon alternatestrokes of the selvage cam follower guide I06 and, incidentally, uponalternate beat-up strokes of the lay 36.

It is thus seen that I have provided an improved selvage motion forlooms and have also provided an improved driving means therefor which issimple and economical in its construction and may be easily assembledand applied to the loom with a minimum-of set-up time.

In the drawings and specification there has been setforth a preferredembodiment of the invention, and although specific terms are employed,they are used in a descriptive and generic sense only and not forpurposes of limitation, the scope of the invention being defined in theclaim.

I claim:

An improvement'in a selvage attachment for a loom having a cam shaft,side frame'members and front and rear girts spanning the side framemembers and also having intermediate girts extachment for forming avariable shed at each selvage comprising at least one first selvageharness and at least one second selvage harness, said loom also havingan upper selvage roll bracket carried by the arch of the loom and alower selvage roll bracket supported by the intermediate girts of theloom, and havingupper and lower selvage rolls carried by the upper andlower selvage roll brackets, respectively, said attachment also havingan upper and a lower harness strap adapted to pass above and beneath theupper and lower selvage rolls, respectively, so that opposed ends ofsaid upper and lower harness straps extend toward one another and meansconnecting the upper and lower ends of the first harness to theproximate ends of the upper and the lower harness straps extending fromone side of the upper and lower selvage rolls, respectively, saidattachment also having means connecting the second selvage harness withthe proximate ends of the upper and lower harness straps extending fromthe other side of the selvage rolls, said attachment also having aforwardly and rearwardly extending control lever oscillatably mounted onsaid upper selva e roll bracket and having one of its ends extendingadjacent the downwardly extending portions of the upper harness strap,said attachment also having means connecting one of the downwardlyextending portions of the upper harness strap to said control lever,said improvement comprising a connecting rod connected to the other endof the control lever, a forked follower guide connected to the lower endof the connecting rod and having its lower end fitting on opposed sidesof the cam shaft, a selvage face cam fixed on the cam shaft and havinginner and outer grooves in one side thereof and merging with each otherat one point, a crescent-shaped member pivoted on the follower guide andhaving movement alternately in said grooves to move the selvageharnesses a greater amount upon alternate revolutions of the cam shaftthan on the other revolutions.

PRICE W. MORRISON.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 769,921 Roper Sept. 13, 1904913,095 Belevance Feb. 23, 1909 v FOREIGN PATENTS Number Country Date299 Great Britain of 1899

